<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../vue.js"></script>
</head>

<body>
    <div id="app">
        <button @cilck="handler">修改对象数据</button>
        <ul>
            <li v-for="value,key in person" :key="item">{{key}}----{{value}}</li>
        </ul>
    </div>
    <script>
        Vue.config.productionTip = false;
        
        const vm = new Vue({
            el: "#app",
            data() {
                return {
                    person:{
                        name:"langwang",
                        age:13,
                        score:{
                            math:111,
                            ch:11
                        }
                    }
                }
            },
            methods: {
                handler(){
                    delete this.person.age;
                    this.person ={ ...this.person}
                }
            },
        })
</script>
</body>

</html>